The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 12, 2014
Filed:
Dec. 17, 2009
David Robert Shreiner, Mountain View, CA (US);
Ian Victor Devereux, Cambridge, GB;
Edvard Sørg{dot Over (A)}rd, Hundhamaren, NO;
Thomas Jeremy Olson, San Jose, CA (US);
David Robert Shreiner, Mountain View, CA (US);
Ian Victor Devereux, Cambridge, GB;
Edvard Sørg{dot over (a)}rd, Hundhamaren, NO;
Thomas Jeremy Olson, San Jose, CA (US);
ARM Limited, Cambridge, GB;
Abstract
A windowing display using deferred drawing commands operates by processing the drawing commands that write to a tileof a frame bufferto form one or more new pixel values are stored within a tile memory. Dirty pixel data indicative of which pixels within the tile memory are dirty pixels storing new pixel values and which pixels within the tile memory are clean pixels not storing new pixel values is also formed. In dependence upon the dirty pixel data, the new pixel value stored within the tile memory are written to the frame buffer memory. Pixels stored within the frame buffer memory corresponding to clean pixels within the tile memory remain unaltered as they are not written.